BFOU(i) 250 V
NEK 606 offshore fire-resistant instrumentation cable, individually screened pairs
BFOU(i) 250 V is the fire-resistant instrumentation cable with individually screened pairs: mica-tape barrier for circuit integrity plus a per-pair screen against crosstalk. For critical emergency and shutdown instrumentation on platforms and ships. Supplied to order; the lead time is stated in the quote.
BFOU(i) 250 V is a fire-resistant, flame-retardant and halogen-free instrumentation cable for fixed installation on offshore units, drilling rigs, FPSOs and ships, designed to NEK TS 606 and IEC 60092-376. The tinned copper conductors carry a mica-tape fire barrier under halogen-free EPR insulation; each pair or triad is individually screened, and the assembly is protected by a halogen-free inner sheath, a braid of tinned copper wires and a halogen-free, drilling-mud-resistant thermoset outer sheath. The cable maintains circuit integrity under fire conditions to IEC 60331 and is intended for instrumentation, communication, control, alarm and emergency-shutdown circuits in safe and hazardous areas, including installations exposed to oil, drilling fluids and drilling mud. It is not intended for power distribution.
Also known as: fire-resistant offshore instrumentation cable
Applications
- Critical instrumentation with circuit integrity and separation between signal pairs.
- Emergency, alarm and emergency-shutdown (ESD) circuits offshore.
- Safe and hazardous areas exposed to oil and drilling mud.
What to look out for
- Circuit integrity to IEC 60331 plus pair screens: earth the individual screens at one end (in the instrument cabinet) and use brackets rated for the same fire time.
- Without circuit integrity, RFOU(i) is the more cost-effective choice.
- If one overall screen suffices, the (c) version is suitable.
- Conductor
- Tinned annealed stranded copper, class 2 acc. to IEC 60228. Class 5 (flexible) on request.
- Fire barrier
- Mica-glass tape applied over the conductor.
- Insulation
- Halogen-free EPR compound.
- Screen
- Individual screen over each pair/triad: copper-laminated polyester tape with tinned copper drain wire; screened elements laid up and wrapped with polyester tape. The tinned copper braid forms the overall screen.
- Armour
- Braid of tinned copper wires over a halogen-free inner sheath.
- Sheath
- Halogen-free, flame-retardant and drilling-mud-resistant thermoset compound (SHF2), grey; blue for intrinsically safe circuits.
- Core identification
- Pair: black / light blue; triad: black / light blue / brown; elements progressively numbered.
- Rated voltage Uo/U
- 150/250 V (max. operating voltage 300 V).
- Test voltage
- 1.5 kV.
- Standard
- NEK TS 606; design acc. to IEC 60092-376; conductors acc. to IEC 60228.
- Fire-resistant
- Circuit integrity acc. to IEC 60331-21.
- Flame-retardant
- Acc. to IEC 60332-1-2 and IEC 60332-3-22 Cat. A.
- Halogen-free
- Acc. to IEC 60754-1/-2; low smoke density acc. to IEC 61034-1/-2.
- Drilling-mud resistant
- Yes, sheath resistant to oil and drilling mud acc. to NEK TS 606.
- Max. conductor temperature
- +90 °C.
- Permitted outer cable temperature, fixed
- −20 °C to +90 °C.
- Min. bending radius, fixed
- 6 × outer diameter (8 × outer diameter during installation).
- Reaction to fire (CPR)
- Outside the scope of EN 50575 (offshore and shipboard cable).
BFOU(i) or BFOU(c)?
BFOU(i) 250 V
- screen per pair or triad
- fire-resistant, IEC 60331-21
BFOU(c)
- one screen over all pairs
- fire-resistant, IEC 60331-21
BFOU(i) has its own screen with a drain wire around each pair or triad; BFOU(c) has one screen over all pairs together. Both are fire-resistant to IEC 60331-21. Choose BFOU(i) for critical circuits where signals must not affect each other, such as emergency shutdown and alarm circuits. If a common screen is sufficient, BFOU(c) is the choice.
View BFOU(c) 250 V →BFOU(i) or RFOU(i)?
BFOU(i) 250 V
- fire-resistant, with mica tape
- circuit keeps working in a fire
RFOU(i)
- flame-retardant
- circuit fails in a fire
Both have a screen per pair, but only BFOU(i) is fire-resistant. The mica tape under the EPR insulation maintains the circuit during a fire to IEC 60331-21. RFOU(i) is flame-retardant: the cable does not spread fire, but the circuit fails in a fire. Choose BFOU(i) for emergency, alarm and shutdown circuits, and RFOU(i) for measuring circuits with no circuit-integrity requirement.
View RFOU(i) 250 V →
RFOU 0.6/1 kV
NEK 606 offshore power cable, halogen-free, braid armoured
Lead time: On request; the lead time is stated in the quote.
BFOU 0.6/1 kV
NEK 606 offshore fire-resistant power cable, halogen-free, braid armoured
Lead time: On request; the lead time is stated in the quote.
RU 0.6/1 kV
NEK 606 offshore power cable, halogen-free, unarmoured
Lead time: On request; the lead time is stated in the quote.
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